TV that remembers multiple passwords

I currently own a Samsung Smart TV. We are constantly switching which mobile network provides its wifi due to our data limits and want to know if there is a TV that will remember the passwords so we do not have to re-type the passwords each time we switch networks. It is tedious to do using arrow keys on a remote.

I bought a keyboard controller for this purpose but it does not work on screens where the way to type is by selecting numbers/letters on the screen- it only works for web search bars like for YouTube or the internet.